{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x74adcf6a9f7c0f3bc371d1e4b69a300a2a59c13e4f794d6cb78413ad9e080520",
    "signature": "0x8c5435c603d001f1936575006351245c2866197d684712e9b354dc3d28932be66aeb19c69262566f329fcd114677cb5899dccb1b4e78c9aebd9ce5978322a5711b",
    "signer": "0xBA5E59C1a01909A7bF252B46074F078c5B28aF1B",
    "userId": "765265635"
  }
}