{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x535b48a86ba8b02a28e3d55486ee04e2bf3f17529ee38495ef5616ceb4932b54",
    "signature": "0xe83272b280dc6358143c8a746f7fa8b248a84d49dc90deca3f20ca4a9db75c6236b1bf2f98f6f20d6be7e1c2e42ba0b10d3f8c9950c6ac28f476fcd0229273ea1b",
    "signer": "0x79375D6d575fE2a038916001077f90CbAE12d4A9",
    "userId": "973873678"
  }
}