{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "634886384",
    "entityType": "User",
    "nonce": "0x5468be89fcd0e1f6762ee56149bd6fce1ce216d243e5295457c11bb91b907842",
    "signature": "0x3ef0d52b68fcfb6a63612b75c99d85f3937bb7f65d0560e3777aec84c1916608393cce7fda7f38505f3da06a00f480a199ba9aa878e78e7a612cc8bead5ceb521c",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}