{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "709579361",
    "entityType": "User",
    "nonce": "0xbf584c1f0a52712ad473c00ef720cb19f26ecd19e8e6ee7763e6efe8630cb9e3",
    "signature": "0xc24320b343b5843df76dab4f5825ea3f700cfeb35256defb69e43a9231480d2e782130e725759da1efada8920047b55a25bb0a6190f6eb5ecf6fe1f1d389473d1b",
    "signer": "0x25e1dfee0D681BE7Cc3edbBa57650eeadD7B075F",
    "userId": "486382568"
  }
}