{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "176537",
    "entityType": "User",
    "nonce": "0x6e77c58dec05a8346fea3b13159000648657bc0d7e74ad6d08e1757564394734",
    "signature": "0x1338bedf0422da3d6ab767c213dee7abd167a7c985da16aabb6a18cd1d6fc09d2b5dc9f10d33ef4cca42f5a26e0c2167cc1a9aee96c5ac24f96161133e60922b1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}