{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "343737",
    "entityType": "User",
    "nonce": "0xd8248b2e3d118605d6c8bff205ff5704e7454443f6f0b802f5ae51d90a40b80b",
    "signature": "0x5ed67d0139a4160101769d378b8e66704719151203c9a17227764645e92b99d9405e483a67cf0286a55bff8bf129e42cf1237f107b002943bb49e07218b7dcd21c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}