{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "842627272",
    "entityType": "User",
    "nonce": "0x57a1c39ae55360066bba5d190622ccdb686d1fd34947f6fbb90ab76db99f9aee",
    "signature": "0x393ddc764ac03ebc56bf015c20d36afa44953b92177ccab5af0f05116e7ebebe168e0b78b9d1852ed3825f5fdc7be82041400cc3bc15dba068ac56bab5ef52531c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}