{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "871515630",
    "entityType": "User",
    "nonce": "0x41a2c03ca3aec2276085e9c2560f2d977ec2b321df159314fc528469aefd067a",
    "signature": "0x1f68b98861a730927eeb6f27d00517b63d9654453a2eea1d8d908e73010f7a52691e0b57753e23e68f0687ac846de53e9f34a66a0012d552e618bbab6c8e0cf21b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}