{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "839400815",
    "entityType": "User",
    "nonce": "0x7f6c692fc8af1715f140c7dcb452a2bcc451778b1e10dcc03a2aff213506bc64",
    "signature": "0xc6948fd1ff98f8209bbaef7a35a33eac2f804c5d2d7bc661b47ff1ce920a8b347cc10f3a9ff0b133ee401f166071c482df92bbd79deff9acdfffde0f06bfb9e11b",
    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}