{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50672",
    "entityType": "User",
    "nonce": "0x02e1b88bb89b87ba34f04689b6a4191b9544c7d74fd5834685b3ddb3a0842ef8",
    "signature": "0xe91846d10d5608c81938f35e112fb6e583bb3cdef274823f5d9b46288f28dc0d3441aefe2af3b29c4323163bfc4f207e46798037e631d2690014502b010c13371b",
    "signer": "0x222534475146193b99B68F2E3830ED2b44307C2D",
    "userId": "991417453"
  }
}