{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1881081",
    "entityType": "User",
    "nonce": "0x946b29c9ec2841c9723355cf863cd50fc94d0ea890cc82cdc6b14decf147ce31",
    "signature": "0xbe4912f43e31ea43cbc317d72307c61c745e80c2ab87a4869ad65a60d3e13e224b57855c016dceaa7cd638c48cc35cccf318474ff471816316d63608c5f1d15a1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}