{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x997c84d87eb27c9eaf87b6c9e00362b5044a61318d6720a8f225ab732ada9ee1",
    "signature": "0x5b8165fbb593f1b6b2a3e749487299b058929673dec6f8ab67113a731e8a5b0a647e24d02b1bc6ff54a287075f4cf6fdd8b10a188005c6c2216e5f20781be30c1c",
    "signer": "0xb73afb44F0ACA7E1152B25AC17A031b25aFeEB55",
    "userId": "552667362"
  }
}