{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "670307808",
    "entityType": "User",
    "nonce": "0x844c803649d64e9640886861e735c3ee205b7df9cb64e3292a80ecde8c3465bc",
    "signature": "0x1a0646b2fbb96bb4d1e4373f33a62e77547973e95d5f9ba2dfe81690065567006ae84ca3c6dfbc00f791ce52ded0683968d281c2d4ab9d1d4aead3d200ed85aa1c",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}