{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "397192",
    "entityType": "User",
    "nonce": "0x8356c4869c5da447ac93cbbc42e76be5a696972af5cdaf6885a3a4f01e26009a",
    "signature": "0x9e457b25be4ca71f6b49b7725f1db33267a46b684f8613df4f7afc0707d911d65e5f40828a7ee97a86c7ec0e7fa55a86db155eb76241c8490ec2e8c7130c8dd01c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}