{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "887547386",
    "entityType": "User",
    "nonce": "0xa211fd0305db82c0fb64d53ff1ed8479c4c7d316b567a17b8be5443619f45a1c",
    "signature": "0x17e0948418807ac4fb820982f792e8e013abe53d94f985fd7457683ce52ecc7a110d558d5441a93776b0aeb3532d355dd4c2b57332d2bb0d9fda3f698e22e2c91b",
    "signer": "0x28E041745695914518512137a56c9810034C10B9",
    "userId": "134529"
  }
}