{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "334956",
    "entityType": "User",
    "nonce": "0x023a3fd63e0434e7954db8b71918c2b20b37e1523c2afe8873d29aa59d7914c3",
    "signature": "0x578ccc80084afd80b5e162fe1549c334df9a2325a0b2172f1510add398f47b110a19dce5b04e53c20a8258f9b1405b4ec60924a4af7359f1ecc9801f46f6e15e1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}