{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2409744fe77421fe1f7b7593d6972533f75ef28ac77319cb11c0c37ba8405d5b",
    "signature": "0x1498478a7790d3e0a44480cfe469994b3ce6f1872111e5fb23864e7781cd6a8f10afde7389a78642d26871c2a9a23f38086395e53fe2b9de979c846961fb8c881c",
    "signer": "0x74574267AC2AF4aED252e12d1abBCc1E3831B1e6",
    "userId": "364222999"
  }
}