{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2989",
    "entityType": "User",
    "nonce": "0x518de174ef8e1e5c8003a9b3ede9aecd68ad217ce47e29bab7c56bb285e18bca",
    "signature": "0x2edd2e6bb7f0b1df583255aee9ed44d1c9988fb6bb458ce09f3fa81db8f4c3d616e47131ebb4a23a2cc73ebdf5e76abb10b8f98fcd8d35b69440ce96338b59d91c",
    "signer": "0xBD51Dde1A079aEe2ff22725423F277B763a3E9eC",
    "userId": "416306987"
  }
}