{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x41cb3001398e7ba69ff108932ba4a3615c686c65b3df13b5ef18007baa15185b",
    "signature": "0x0c39ba5d55e4af682587e9a3adabe3ef1fad9fd2065d73d718e490c2cc44daa01f46023b77fb1d4c003610e54b1cdc0986f85308dd78023d4f27726a6ba34e451b",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}