{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "355715",
    "entityType": "User",
    "nonce": "0x729e5f5ae60bd0b453c99655ee7ee9195c55a2e66d9db6a3eb8d8d20a3c55bec",
    "signature": "0xf769ef76aa4cd047f4af81500dfc4e1517f9887c2570ff6129500fd902c6e5f074c6339546df479cddaea5c5e980857e3ed8fb127aa295fe9c585b27d90652041b",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}