{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "544923401",
    "entityType": "User",
    "nonce": "0x9a5c220ffbe7ca4b7f30f4c25bb89f24d84e0f56149634f8eff2638bbf9d185c",
    "signature": "0x7aadda7976fb925f9348c72438af42bfc8c93be1d166f20487888eedbe05fba25d8e7c65352f2b9074618b4879b262646af06ddd5d48a7970edc538783a054e91b",
    "signer": "0x102a924C1c076Dcb5816d20E32Dcb6F00e75F2C9",
    "userId": "485987672"
  }
}