{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9ee0be9b8904f5ade9cd6b7cdeba00d3209ec1f3bcefaccc34c117d014f9703b",
    "signature": "0x45d5efe9a3ed074e66913f70c4f32a714c208d6b8f81c240d7b22c48ea7aa2bb68aff16c1be8bf6d46639b61bf792b624702bef825f0299320d6ee61738359461c",
    "signer": "0xe862752d5754CA4034035D0c731bA7De15D49Ff5",
    "userId": "108308523"
  }
}