{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xcaa6bf6abb3103443b9c6b1fc2359846be5fd275448ae3a231cc467aef33d678",
    "signature": "0xdc75191e7ffe48e2967b5b40448f92b0f18db3a74a8acf7370a7e5c3f8fd92c516e3836f485779224f01974bc9bb41d223c1a3017cbe680c25f8220f752544e01b",
    "signer": "0x49Bf16AF8b770698D8C605Ae4571C40188480374",
    "userId": "557739395"
  }
}