{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "77916",
    "entityType": "User",
    "nonce": "0x505dd7435d77a86823517865a647a062dda1070f702450e53d82727e27e35e45",
    "signature": "0x5d8be5b07ae128d04be83e0b31d63dc6042904e693ec94d9e96390e5b4d173195267bbc340a2d6c4b95e58b212444786e54e562d2dbed8c63e53b615ff3508581b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}