{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6eb43543874d99f0926f284231022b743a653eddfc5f4378ba2b0bf7dee1eb4a",
    "signature": "0x7583c143e6519235e7bba55a10ebe3eb47e4d591051965b071603525f427c6da3cea980bd5b2382f954e537527aaea2820611880bf17b7e1c8f423e611c1fa721b",
    "signer": "0xEcA3Cb1451A243c74832B7B02fdb9Bd1029BEfeC",
    "userId": "449714482"
  }
}