{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "137494",
    "entityType": "User",
    "nonce": "0x44d3ff5406374e4c710d37002c56325a61978239ffc4a90baaa54a8556bbd7cf",
    "signature": "0x67530e539d28f62373b3aff93960526f6d7560a68aba0ea66d3514b0e09275b5296d3a2dca77b19f70a888b29477675d890aff4e773c79df87fbcbd24a6b74a51c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}