{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "137494",
    "entityType": "User",
    "nonce": "0xe4e5b9c5225af59b9de81612a0fb2339a843f8abc5f7b38c9422b5d1027381a8",
    "signature": "0xae8b63bd40a0ad02ac7a90975c9201e332490c4bf3d1f48c90907edf8bc9c1e468706be8a77af5149255871a5320accd1f185b0eddf42962b7cad08f26a579081b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}