{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4a714f08f0b4ddaf5e8ce834ade16b891005ceb5fb73b161826d7339fbd319ab",
    "signature": "0xbb84e9dae96b16d01e279a2c60f7aa1faeabd23431044352ae6ed8589ecb7acb2e2cb8aa072c6d7814c48fa6321e8387e3e6dc9676ea5e370096cea9fb9796e21b",
    "signer": "0xdd257a65C3E6b2f9019ee50DFd152306BC197EE8",
    "userId": "121094478"
  }
}