{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0ed3a1d2c8cb70bc9c14a64a5f0094b223e664dfd16345b6d2d5014090f92f4e",
    "signature": "0x621e900b68fdb382e98184c27ceffe18d49ad1b1a4ff0efa827822ab52bc641348cd0d149f4c8bc62e264132e488f69784f5a537debb2f30c8117fbacd1394171c",
    "signer": "0x0eaC352dF70F508A73F9a2d98dab708737beAB8C",
    "userId": "820616115"
  }
}