{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "387399",
    "entityType": "User",
    "nonce": "0x0f03a0d284f223e3c0f0ad245e1aff7f8025e3832fef14aa5959f300aa200499",
    "signature": "0x8db9b9fa21a8334be7fbaa4e3aa214326327c8d599ac66852e733ae347763fa62bfdf3991fdd86de034f6a41cf9a8593e43b5ffff8a95eff29a1af776ace1b181c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}