{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "6514",
    "entityType": "User",
    "nonce": "0x1f3a2e9ae4772ff2300be0e1f76dab11fc9207d9dc6967d1d85825020d7bb597",
    "signature": "0x13b6e89a1b0d468b2c6b1ab287afbb25ac7ed7bbb4495842f0723ab2000c621e32ea4bbdc26f8ca5d61e5f29f833ee2aa9378606639c471f276e16506023f8de1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}