{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "13521",
    "entityType": "User",
    "nonce": "0x338b9ea3fc5133dcbe9ae2d5165ca0db5bff9a0b4e0e4d19fac0ffd8607457c6",
    "signature": "0xcb0eb4f24e994033fbdde20deac63496518c693668080856eeca6a160928835a31aad42b416dff941160941bcdd3086df04b9d7f39735a2d24fb2e0b0a7d8e031b",
    "signer": "0xCadb35b037c9B660c6E92A375F3d8758501B15Ee",
    "userId": "28894287"
  }
}