{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "318003",
    "entityType": "User",
    "nonce": "0xf12bac40d8a77e9763d767c84ba64445bfff7f64a0c5c93961c61da5c1a30c64",
    "signature": "0x7050ba0c5741196359da6781aa3d8616b7bb24fdfadd80e745d6d51f0b2d0c2d04d2d38b8aff9f7749815799753b2fd92b2f8e32a58e7af4c5e183eaa31704641c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}