{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0x15ae14cab2cb47962b48433fb82fb2801286cae108956d81deeb48e9a68c2c18",
    "signature": "0xb0c51b8c99927e4ea1d895a5d7ada7bb3a87356e658937d3b25030299aa738ef3f369e1bf0bfcefbbf6c09a60a708045f12fbdd285f479caa4de342c26a87f861c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}