{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1881281",
    "entityType": "User",
    "nonce": "0xa201f4aa005dbe1c15aaa099e7d781a82a206f1bb0da51c7b27fed30711ed963",
    "signature": "0xc5c7e73816e40c6b41c99f5f9272823b921336354df629e880c50c184c1755bf327a73cc706785049dab5ad97db93a6958501a089d69498cb8e179d3b1120c281c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}