{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50511",
    "entityType": "User",
    "nonce": "0xf70a11e0618021b8707138c37f5a20e20983ab876fe4ce422790dcd41a1aec59",
    "signature": "0x8a52e30cf69f6fab88f90bc4af1d02d2063f0076b7c244cfddabf99db5b0dfd122f29e828b59c9dadec3dad48a942dcfd6005433721739e13a7c4d931fd79c731b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}