{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "642319857",
    "entityType": "User",
    "nonce": "0x7f022da4e7d801537ed7ca454ad261b25fa31cb67ea833602f9861f7cd7b8fb1",
    "signature": "0xf04aad6ec59c9ceb53e0d7266c83e91c55231539b20dcbe615d2d95250f8c59c0526b99aca5a61871f92fa8b9617c72624f78b7ef8da353c6dfc35bd0b516a8f1b",
    "signer": "0x3bF1258fC69C58D6B191B7872B2D087a37900E66",
    "userId": "347062615"
  }
}