{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x905aae9208f4d823feb83e4e7a9127341937af4f8d5cef8621f4761f8545d1dd",
    "signature": "0x8a1d9e8f90fe8bd79c1acc501744afb74697bc24eadcd83ed3649c68423f8fc74676569e35667a1a382e7eb400f73b9d22cdee1734caa95a9c0a729322815e201b",
    "signer": "0x17E5Cd991203390519d2FC47aDbaC0DF4B27bBe3",
    "userId": "300815705"
  }
}