{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54292",
    "entityType": "User",
    "nonce": "0x7b635e422344d58e041f3c41c40ab68b1821056f27a6f9ffc1c74417e9769532",
    "signature": "0x304ee3d6773fdb79d7d0effe0efdb6563f351ce9ccf3a2094884a8cdea76d568249c7a661c7d256ad6f34dad3edcbe8370933fd16881cdc312d440c0ad9ef7851b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}