{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0a70bd48643b81ac247192be9a5c5d4702946b38eee9e9c953b7d166bd1b80ca",
    "signature": "0xbb611f7408fcc97eac5141b8801e3afbbabafb241cceee004c44ff5db73130f67b625a9ae9190b66016c29fe31dc24e339a0461b010aecbcbd575479f28d625c1c",
    "signer": "0xCF2E1E2F9C1b2f1F60F4100a9F32aA4D53a1368d",
    "userId": "240318753"
  }
}