{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2521",
    "entityType": "User",
    "nonce": "0xd7ef2305e4bd39b6030532299a4a0afd7137d0f33e6f58c7bd0fce31846c65e5",
    "signature": "0xb20a6224d5a8983a4f64a9f86e6812ec804f2b948cd7cf9653456ae4e19d1a650c5955b831e6970de281b37683b12d5c7b9085b130859fa532343d1145b0e05d1b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}