{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "137872",
    "entityType": "User",
    "nonce": "0x3766707aa54fe61adb7b63d281edb37276c53e332c91b186de1d0e99a38fee77",
    "signature": "0x2ee44f97867fa91ba9d1d392f5d64b97db78182c80f37b235e7a9b245ee03f6a71dc7cbd8c2df9c36da61b1cbc6345709a3f1a5fcd75e2c7a0e6d6773d79724c1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}