{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7a493f5b058f7ca2b534d486e4a8e50f9ede6362732da944545784dd0c1cdd1f",
    "signature": "0x01011acb3f4b0bb6d2e02297fd7feac2299b05d86eb235953330e802265a184d0195319cde1e59f74e02cf27ca53ef29ac3ae81a2597764d7a9d5b6140cfd1b21b",
    "signer": "0x5621c996698b35698dF806E916C147a18C5c3170",
    "userId": "303777695"
  }
}