{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "464332",
    "entityType": "User",
    "nonce": "0x51d6c067ce6a639fb2ec180288e57f7bbdd58d2900c6b4b5c6bb9fcb9f48d01d",
    "signature": "0x7d28cc38ae70fa1b0fc646ad7e414bac31727711098bb8be0126c6a552b4b3ff538af12559af76fa282bf83f0c41e0ae542556c340211c62c5c00918de5cda4a1c",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}