{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x16bbe978cbdf93b019dceeae170148ddfc12b60046e5eac6f497d76edb778d82",
    "signature": "0xbae6d57b6f359726341502fa4a7ddad8c4d66d61c0736282698e63e63810782f789f51cf6e34c19bf64f2af4965c79aa4ff155900d7aad08215717e4e63d85bd1c",
    "signer": "0x8A6d37Be1a08F1aaFB0BCc6ef8bea16935e6B39F",
    "userId": "687066725"
  }
}